EP 0909448 B1 20020130 - AN ELECTRIC DEVICE WITH A POROUS CONDUCTOR INSULATION IMPREGNATED WITH A DIELECTRIC FLUID EXHIBITING A RHEOLOGIC TRANSITION POINT
Title (en)
AN ELECTRIC DEVICE WITH A POROUS CONDUCTOR INSULATION IMPREGNATED WITH A DIELECTRIC FLUID EXHIBITING A RHEOLOGIC TRANSITION POINT
Title (de)
ELEKTRISCHE VORRICHTUNG MIT PORÖSER LEITERISOLIERUNG IMPRÄGNIERT MIT EINEM DIELEKTRISCHEN FLUIDUM MIT RHEOLOGISCHEM ÜBERGANGSPUNKT
Title (fr)
DISPOSITIF ELECTRIQUE AVEC ISOLATION DE CONDUCTEUR POREUSE, IMPREGNEE D'UN FLUIDE DIELECTRIQUE PRESENTANT UN POINT DE TRANSITION RHEOLOGIQUE
Publication
Application
Priority
- SE 9701095 W 19970703
- SE 9602647 A 19960704
Abstract (en)
[origin: WO9801869A1] An electric device comprising a conductor and a porous conductor insulation impregnated with a dielectric fluid. Where the dielectric fluid comprises; a polymer; and a hydrocarbon-based fluid. The dielectric fluid being composed such that a part of the polymer molecule interacts with the hydrocarbon-based fluid or another part in the polymer molecule in such a way that the dielectric fluid at temperatures within a first low temperature range is in a highly viscous and elastic, essentially gelled, state; at elevated temperatures within a second higher temperature range, is in low viscosity easy flowing and essentially newtonian state; and that the viscosity of the dielectric fluid is, over a third limited temperature range, the transition range, changed between the low viscosity state and the highly viscous state. The transition range comprises temperatures between the first and the second temperature ranges.
IPC 1-7
IPC 8 full level
C08L 53/00 (2006.01); C08L 57/02 (2006.01); H01B 3/20 (2006.01); H01B 3/22 (2006.01); H01B 3/30 (2006.01); H01B 9/00 (2006.01)
CPC (source: EP US)
H01B 3/20 (2013.01 - EP US); Y10T 428/294 (2015.01 - EP US); Y10T 428/2947 (2015.01 - EP US)
Designated contracting state (EPC)
DE DK ES FI FR GB IE IT NL SE
DOCDB simple family (publication)
WO 9801869 A1 19980115; DE 69710196 D1 20020314; EP 0909448 A1 19990421; EP 0909448 B1 20020130; JP 2000517094 A 20001219; NO 985998 D0 19981218; NO 985998 L 19990304; SE 9602647 D0 19960704; US 6245426 B1 20010612
DOCDB simple family (application)
SE 9701095 W 19970703; DE 69710196 T 19970703; EP 97930932 A 19970703; JP 50511498 A 19970703; NO 985998 A 19981218; SE 9602647 A 19960704; US 21429799 A 19990208